Condenser or exhaust tube for steam-engines.



No. 69!,978. Patanted Ian. 28, 1902.

A. P. a H. SMITH.

CONDENSER 0R EXH'AUST'TUBE FOR STEAM ENGINES.

J'Lpplipation filed June 14, 1900,)

.(No Model.)

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UNITED STATEs PATENT OFFICE.

ARTHUR P. SMITH AND HINSDALESMITH, OF SPRINGFIELD, MASSACHUSETTS.

CONDENSER OR EXHAUST TUBE FOR STEAM-ENGINES.

SPECIFICATION firming part Of Letters Patent NO. 691,978, dated January2 8, 1 902 Application filed June 14,1900. Serial No. 20,260. (Nomodel.)

To all whom it may concern:

Be it known that we, ARTHUR P. SMITH and HINSDALE SMITH, citizens of theUnited States of America, and residents of Springfield, in the county ofHampden and State of Massachusetts, have invented certain new and usefulImprovements in Condense'r or Exhaust Tubes for Steam-Engines, of whichthe following is a full, clear, and exact description.

This invention relates to improvements in tubes or conduits for theexhaust-steam in steam-engines or for the exhausting powerproducingagent in other types of motors, which improved tube is advantageouslyavailable for insuring the rapid condensation or cooling of the steam orother fluid or gas being exhausted or otherwise employed in connectionwith the engine.

The object of the invention is to provide an improved tubular conduit ofsuch a novel construction as to afford a high capacity for ra diationand exposed air-surface, whereby the heated fluid or gas in passagethrough the conduitwill have the temperature thereof greatly lowered inan unusually short time.

The invention consists in a tube or conduit for the exhaust of an engineor motor constructed substantially as hereinafter fully described, andset forth in the claim.

The improved exhaust-conduit or condensertube is illustrated in theaccompanying drawings, in which-- Figure 1 is a side View of a portionof the length of one of the tubes, a part of the openwork externalcovering being broken away from the star-shaped tubular body. Fig. 2 isa cross-sectional view of the tube. Fig. 8 is a partial cross-sectionalview of the tube, on a larger scale, for more truly showing the specific construction thereof.

In the drawings, A represents the exhaustc0nduit,which, itis understood,maybe of any suitable length and which may have end'connections with theexhaust-outlet port of the engine or motor, as desired.

B represents the body of the tube, which, as shown, is of the form of ahollow star, the wall being constituted by sheet metal wrought to thestated form. The longitudinally-ranging radiating membersa a, each ofwhich has the space b therewithin in addition to the common centralspace d, have the externallyapplied and connected coverings C O ofopenwork construction, each of these coverings being preferably composedof a length orstrip of wire-gauze longitudinally bent to assumecross-sectionally a loop form, the marginal portions of each of the sobent gauze strips being convergent and lapped upon the reentrantexternal surfaces of the adjacent radiating members of the star-shapednon-pormore effectually subjected to the cooling process by the air thatthe exhaust steam or gas becomes so reduced in temperature as to besusceptible of reuse in the engine, if desired, and there accrues thefurther highly-advantageous eifect of maintaining the engine or the partof the engine through which the exhaust is carried ata much lowertemperature than would be the case if an ordinaryexhausfl pipe wereemployed.

A foraminous outer covering for the non porous tube-body specificallydifierent from gauze may be employed, if desired-that is to say,perforated sheet metal might be used. The exhaust-tube may have an endhead or heads with a coupling-stem, if desired, for convenience in theconnection of the tube with the engine or any of the equipments orappliances employed. in conjunction therewith.

The tube herein described and claimed may obviously be utilized withadvantage for maintaining at a low temperature the water which isemployed in circulation about the cylinder of a gas'engine for keepingsuch cylinder cool.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

In an exhaust tube or conduit for an engine or motor, the combinationwith the cen- IOC Signed by us at Springfield, Massachusetts, this 2dday of June, 1900.

ARTHUR P. SMITH. HINSDALE SMITH.

tral sheet-metal hollow star-shaped tubebody B, of the several strips ofWire-gauze bent into cross-sectional lo0ps,with their marginal portionsconvergent and arranged within the rentrant spaces between the radiatingmember of the sheet-metal body and secured in cont-act on the externalsurfaces of said members, substantially as described.

\Vitnesses:

WM. S. BELLoWs, ETHEL M. KNIGHT.

